Android how to return to Main Activity without navigating backstack?

Question

I'm operating in a fragment, and one of the options is to delete the thing I'm looking at. Upon confirming the delete action, I want it to just back out to the home screen, or MainActivity, and I don't want to go through the backstack, since that will attempt to traverse over the thing I just deleted.

Answer 1

You can use below code to clear all previous stack, Launch the same main activity.

Intent i = new Intent(OldActivity.this, MainActivity.class);
// set the new task and clear flags
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |  Intent.FLAG_ACTIVITY_CLEAR_TASK)
startActivity(i);

You can also use ActivityCompat.finishAffinity() to clear all child activities.